Window-screen.



H. BACKSTROM.

WINDOW SCREEN.

APPLICATION FILED JULY 25, 1912.

1,1 12,590. Patented Oct. 6, 1914.

HENNING BACKSTROM, OF CHICAGO, ILLINOIS.

wmnow-scnnnn.

Specification of Letters Patent.

Application filed July 25, 1912. Serial No. 711,556.

- To all whom it may concern Beit known that I, HENNINGBACKSTROM, a citizen of the United States, and a resident of .the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Window- Screens, of which the following is a specification.

My invention relates to window screens and particularly to screens in which the screen fabric is removably secured to the frame.

The obect of this improvement is to provide a device of the character mentioned which will be simple of construction and efiicient in operation.

Other objects will appear hereinafter.

Theinvention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure 1 is an elevation of a screen made in accordance with my invention, and showing a portion of the screen fabric and retainers removed exposing a portion of the frame, Fig. 2 is a view on line 22 in Fig. 1, Fig. 3 is a view on line 33 in Fig. 1, and Fig. 4 is a view, in perspective, showing a fragment of the channel guide in which the screen is mounted.

The preferred form of construction, as.

illustrated in the drawings, comprises a frame made up of bars 5 joined together at their end portions by means of bolts or rivets 6. Such bars 5 are joined as indicated in Fig. 1 so that there is a small recess in the corner to accommodate a double folding of the screen fabric.

The screen fabric 7 is stretched across the frame and its edge portions bent around the outer edges of the bars 5 and the-resilient retaining members 8 clamped. on the fabric and bars as clearly illustrated in the drawings. The resilient retainers 8 are preferably U-shaped in cross section and the leg portions of the retainers clamping the wire on the frame as described. When the screen fabric has become worn or it is desired to replace it for any reason the retainers 8 may be removedand a. new wire fabric stretched across the frame bars 5 and the retainers 8 again replaced in position to secure the screen fabric.

A channel guide 9 is provided on each side of the screen, to the window casing 10, for mounting the screen therein. Screws or nails 11 are provided at intervals along the channel guide 9 to secure the channel guides to the window casing.

While I have illustrated and described the preferred form of construction for carrying my invention into effect this is capabl'e of variation and modification without departing from-the spirit of the invention.-

corners of said fabric being folded into said recesses; and removable U-shaped channel members placed over the sides and ends of said frame to secure said fabric thereto, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENNING BAoKsTno'M.

WitneSses ARTHUR A. OLSON JOSHUA R. H. PoT'rs.

Patented Oct. 6,1914. 

